preciousness

from WordNet (r) 3.0 (2006)

preciousness
    n 1: the quality possessed by something with a great price or
         value [syn: {costliness}, {dearness}, {preciousness}]
    2: the positive quality of being precious and beyond value [syn:
       {invaluableness}, {preciousness}, {pricelessness},
       {valuableness}]
    3: the quality of being fastidious or excessively refined [syn:
       {preciosity}, {preciousness}]

from The Collaborative International Dictionary of English v.0.48

Preciousness \Pre"cious*ness\, n.
   The quality or state of being precious; costliness; dearness.
   [1913 Webster]